Chinese Optics Letters, 2008, 6 (8): 564, Published Online: Sep. 2, 2008
Close-range optical measurement of aircraft's 3D attitude and accuracy evaluation Download: 511次
光学测量 飞行器姿态测量 激光跟踪仪 精度分析 矩阵分析 120.0120 Instrumentation, measurement, and metrology 120.4640 Optical instruments 120.4820 Optical systems 140.3460 Lasers
Abstract
A new screen-spot imaging method based on optical measurement is proposed, which is applicable to the close-range measurement of aircraft's three-dimensional (3D) attitude parameters. Laser tracker is used to finish the global calibrations of the high-speed cameras and the fixed screens on test site, as well as to establish media-coordinate-frames among various coordinate systems. The laser cooperation object mounted on the aircraft surface projects laser beams on the screens and the high-speed cameras synchronously record the light-spots' position changing with aircraft attitude. The recorded image sequences are used to compute the aircraft attitude parameters. Based on the matrix analysis, the error sources of the measurement accuracy are analyzed, and the maximum relative error of this mathematical model is estimated. The experimental result shows that this method effectively makes the change of aircraft position distinguishable, and the error of this method is no more than 3' while the rotation angles of three axes are within a certain range.
Zhe Li, Zhenliang Ding, Feng Yuan. Close-range optical measurement of aircraft's 3D attitude and accuracy evaluation[J]. Chinese Optics Letters, 2008, 6(8): 564.